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The pairing in a system of electrons and holes in two spatially separated parallel planes is studied in the case of electron-hole asymmetry caused by the difference in the carriers masses and their chemical potentials. It is found that the…

介观与纳米尺度物理 · 物理学 2014-07-15 Ilya Grigorenko , Roman Ya. Kezerashvili

A snap-through bifurcation occurs when a bistable structure loses one of its stable states and moves rapidly to the remaining state. For example, a buckled arch with symmetrically clamped ends can snap between an inverted and a natural…

软凝聚态物质 · 物理学 2024-07-03 Qiong Wang , Andrea Giudici , Weicheng Huang , Yuzhe Wang , Mingchao Liu , Sameh Tawfick , Dominic Vella

Ultracold atomic Fermi gases present an opportunity to study strongly interacting Fermi systems in a controlled and uncomplicated setting. The ability to tune attractive interactions has led to the discovery of superfluidity in these…

量子气体 · 物理学 2010-07-29 J. P. Gaebler , J. T. Stewart , T. E. Drake , D. S. Jin , A. Perali , P. Pieri , G. C. Strinati

Droplets moving in a microfluidic loop device exhibit both periodic and chaotic behaviors based on the inlet droplet spacing. We propose that the periodic behavior is an outcome of a dispersed phase conservation principle. This conservation…

流体动力学 · 物理学 2012-12-06 Jeevan Maddala , Siva A. Vanapalli , Raghunathan Rengaswamy

We analyze the superfluid phase transition of harmonically confined bosons with long-range interaction in both two and three dimensions in a broad parameter range from weak to strong coupling. We observe that the onset of superfluidity…

量子气体 · 物理学 2015-02-09 T. Dornheim , A. Filinov , M. Bonitz

Dielectric relaxation measurements on supercooled triphenyl phosphite show that at low temperatures time-temperature superposition (TTS) is accurately obeyed for the primary (alpha) relaxation process. Measurements on 6 other molecular…

软凝聚态物质 · 物理学 2009-10-31 Niels Boye Olsen , Tage Christensen , Jeppe C. Dyre

There is a fundamental connection between temperature-quenched 2D superfluids and 2D quantum turbulence: the mechanism responsible for the decay of the vorticity after the quench is the enstrophy cascade of 2D turbulence. The range of the…

统计力学 · 物理学 2022-02-02 Gary A. Williams

We consider a two-dimensional fully frustrated Josephson-junction array, which is driven uniformly by oscillating currents. As the temperature is lowered, there emerges a dynamic phase transition to an ordered state with nonzero dynamic…

凝聚态物理 · 物理学 2009-11-07 Gun Sang Jeon , Jong Soo Lim , Hyun Jin Kim , M. Y. Choi

We develop an analogy between fluids and black holes to study phase transitions in the latter. The entropy-temperature graph shows the onset of a phase transition without any latent heat. The nature of this continuous (higher order) phase…

广义相对论与量子宇宙学 · 物理学 2011-01-13 Rabin Banerjee , Sujoy Kumar Modak , Saurav Samanta

The existence of a paradoxical supersolid phase of matter, possessing the apparently incompatible properties of crystalline order and superfluidity, was predicted 50 years ago. Solid helium was the natural candidate, but there supersolidity…

量子气体 · 物理学 2019-10-17 L. Tanzi , S. M. Roccuzzo , E. Lucioni , F. Famà , A. Fioretti , C. Gabbanini , G. Modugno , A. Recati , S. Stringari

We study the dissipative dynamics of a fermionic superfluid in presence of two-body losses. We use a variational approach for the Lindblad dynamics and obtain dynamical equations for Anderson's pseudo-spins where dissipation enters as a…

强关联电子 · 物理学 2023-05-24 Giacomo Mazza , Marco Schirò

We analyze the behavior of supercooled fluids under shear both theoretically and numerically. Theoretically, we generalize the mode-coupling theory of supercooled fluids to systems under stationary shear flow. Our starting point is the set…

软凝聚态物质 · 物理学 2009-11-10 Kunimasa Miyazaki , David R. Reichman , Ryoichi Yamamoto

We consider the low energy collective mode spectrum of a superfluid Fermi gas in a spherical trap in the collisionless regime. Using a self-consistent random-phase approximation, the effects of superfluidity on modes of dipole and…

凝聚态物理 · 物理学 2009-11-07 G. M. Bruun , B. R. Mottelson

Superconducting quantum interference device arrays have been extensively studied for their high magnetic field sensitivity. The performance of these devices strongly depends on the characteristic parameters of their Josephson junctions,…

超导电性 · 物理学 2022-11-28 M. A. Gali Labarias , E. E. Mitchell

We provide a complete study of the phase diagram characterising the distinct dynamical regimes emerging in a three-dimensional Josephson junction in an ultracold quantum gas. Considering trapped ultracold superfluids separated into two…

量子气体 · 物理学 2020-12-30 K. Xhani , L. Galantucci , C. F. Barenghi , G. Roati , A. Trombettoni , N. P. Proukakis

We investigate superfluid properties of a one-component Fermi gas with a uniaxially anisotropic $p$-wave pairing interaction, $U_x>U_y=U_z$ (where $U_i$ ($i=x,y,z)$ is a $p_i$-wave pairing interaction). This type of interaction is…

量子气体 · 物理学 2016-01-20 Daisuke Inotani , Yoji Ohashi

Though the notion of phase synchronization has been well studied in chaotic dynamical systems without delay, it has not been realized yet in chaotic time-delay systems exhibiting non-phase coherent hyperchaotic attractors. In this article…

混沌动力学 · 物理学 2009-11-11 D. V. Senthilkumar , M. Lakshmanan , J. Kurths

Superfluidity is a macroscopic quantum phenomenon, which shows up below a critical temperature and leads to a peculiar behavior of matter, with frictionless flow, the formation of quantized vortices, and the quenching of the moment of…

Hysteresis in the current-voltage characteristic in a superconducting nanowire reflects an underlying bistability. As the current is ramped up repeatedly, the state switches from a superconductive to a resistive one, doing so at random…

超导电性 · 物理学 2009-01-07 Nayana Shah , David Pekker , Paul M. Goldbart

Singlet pairing in a Fermi superfluid is frustrated when the amounts of fermions of each pairing partner are unequal. The resulting `imbalanced superfluid' has been realized experimentally for ultracold atomic gases with s-wave…

超导电性 · 物理学 2008-07-28 J. Tempere , S. N. Klimin , J. T. Devreese , V. V. Moshchalkov